diff options
Diffstat (limited to 'third_party/git/config.c')
| -rw-r--r-- | third_party/git/config.c | 198 |
1 files changed, 117 insertions, 81 deletions
diff --git a/third_party/git/config.c b/third_party/git/config.c index 3900e4947be9..2bdff4457be7 100644 --- a/third_party/git/config.c +++ b/third_party/git/config.c @@ -37,6 +37,7 @@ struct config_source { enum config_error_action default_error_action; int linenr; int eof; + size_t total_len; struct strbuf value; struct strbuf var; unsigned subsection_case_sensitive : 1; @@ -204,7 +205,7 @@ static int prepare_include_condition_pattern(struct strbuf *pat) strbuf_splice(pat, 0, 1, path.buf, slash - path.buf); prefix = slash - path.buf + 1 /* slash */; } else if (!is_absolute_path(pat->buf)) - strbuf_insert(pat, 0, "**/", 3); + strbuf_insertstr(pat, 0, "**/"); add_trailing_starstar_for_dir(pat); @@ -275,7 +276,7 @@ static int include_by_branch(const char *cond, size_t cond_len) int flags; int ret; struct strbuf pattern = STRBUF_INIT; - const char *refname = !the_repository || !the_repository->gitdir ? + const char *refname = !the_repository->gitdir ? NULL : resolve_ref_unsafe("HEAD", 0, NULL, &flags); const char *shortname; @@ -309,7 +310,7 @@ int git_config_include(const char *var, const char *value, void *data) { struct config_include_data *inc = data; const char *cond, *key; - int cond_len; + size_t cond_len; int ret; /* @@ -358,12 +359,13 @@ static inline int iskeychar(int c) * * store_key - pointer to char* which will hold a copy of the key with * lowercase section and variable name - * baselen - pointer to int which will hold the length of the + * baselen - pointer to size_t which will hold the length of the * section + subsection part, can be NULL */ -static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet) +static int git_config_parse_key_1(const char *key, char **store_key, size_t *baselen_, int quiet) { - int i, dot, baselen; + size_t i, baselen; + int dot; const char *last_dot = strrchr(key, '.'); /* @@ -425,7 +427,7 @@ out_free_ret_1: return -CONFIG_INVALID_KEY; } -int git_config_parse_key(const char *key, char **store_key, int *baselen) +int git_config_parse_key(const char *key, char **store_key, size_t *baselen) { return git_config_parse_key_1(key, store_key, baselen, 0); } @@ -523,6 +525,19 @@ static int get_next_char(void) c = '\r'; } } + + if (c != EOF && ++cf->total_len > INT_MAX) { + /* + * This is an absurdly long config file; refuse to parse + * further in order to protect downstream code from integer + * overflows. Note that we can't return an error specifically, + * but we can mark EOF and put trash in the return value, + * which will trigger a parse error. + */ + cf->eof = 1; + return 0; + } + if (c == '\n') cf->linenr++; if (c == EOF) { @@ -728,7 +743,7 @@ static int git_parse_source(config_fn_t fn, void *data, const struct config_options *opts) { int comment = 0; - int baselen = 0; + size_t baselen = 0; struct strbuf *var = &cf->var; int error_return = 0; char *error_msg = NULL; @@ -1204,7 +1219,7 @@ static int git_default_core_config(const char *var, const char *value, void *cb) default_abbrev = -1; else { int abbrev = git_config_int(var, value); - if (abbrev < minimum_abbrev || abbrev > 40) + if (abbrev < minimum_abbrev || abbrev > the_hash_algo->hexsz) return error(_("abbrev length out of range: %d"), abbrev); default_abbrev = abbrev; } @@ -1364,6 +1379,11 @@ static int git_default_core_config(const char *var, const char *value, void *cb) return 0; } + if (!strcmp(var, "core.sparsecheckoutcone")) { + core_sparse_checkout_cone = git_config_bool(var, value); + return 0; + } + if (!strcmp(var, "core.precomposeunicode")) { precomposed_unicode = git_config_bool(var, value); return 0; @@ -1379,11 +1399,6 @@ static int git_default_core_config(const char *var, const char *value, void *cb) return 0; } - if (!strcmp(var, "core.partialclonefilter")) { - return git_config_string(&core_partial_clone_filter_default, - var, value); - } - if (!strcmp(var, "core.usereplacerefs")) { read_replace_refs = git_config_bool(var, value); return 0; @@ -1539,6 +1554,7 @@ static int do_config_from(struct config_source *top, config_fn_t fn, void *data, top->prev = cf; top->linenr = 1; top->eof = 0; + top->total_len = 0; strbuf_init(&top->value, 1024); strbuf_init(&top->var, 1024); cf = top; @@ -1702,6 +1718,7 @@ static int do_git_config_sequence(const struct config_options *opts, char *xdg_config = xdg_config_home("config"); char *user_config = expand_user_path("~/.gitconfig", 0); char *repo_config; + enum config_scope prev_parsing_scope = current_parsing_scope; if (opts->commondir) repo_config = mkpathdup("%s/config", opts->commondir); @@ -1724,15 +1741,12 @@ static int do_git_config_sequence(const struct config_options *opts, if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) ret += git_config_from_file(fn, user_config, data); - current_parsing_scope = CONFIG_SCOPE_REPO; + current_parsing_scope = CONFIG_SCOPE_LOCAL; if (!opts->ignore_repo && repo_config && !access_or_die(repo_config, R_OK, 0)) ret += git_config_from_file(fn, repo_config, data); - /* - * Note: this should have a new scope, CONFIG_SCOPE_WORKTREE. - * But let's not complicate things before it's actually needed. - */ + current_parsing_scope = CONFIG_SCOPE_WORKTREE; if (!opts->ignore_worktree && repository_format_worktree_config) { char *path = git_pathdup("config.worktree"); if (!access_or_die(path, R_OK, 0)) @@ -1740,11 +1754,11 @@ static int do_git_config_sequence(const struct config_options *opts, free(path); } - current_parsing_scope = CONFIG_SCOPE_CMDLINE; + current_parsing_scope = CONFIG_SCOPE_COMMAND; if (!opts->ignore_cmdline && git_config_from_parameters(fn, data) < 0) die(_("unable to parse command-line config")); - current_parsing_scope = CONFIG_SCOPE_UNKNOWN; + current_parsing_scope = prev_parsing_scope; free(xdg_config); free(user_config); free(repo_config); @@ -1765,6 +1779,9 @@ int config_with_options(config_fn_t fn, void *data, data = &inc; } + if (config_source) + current_parsing_scope = config_source->scope; + /* * If we have a specific filename, use it. Otherwise, follow the * regular lookup sequence. @@ -1861,9 +1878,9 @@ static struct config_set_element *configset_find_element(struct config_set *cs, if (git_config_parse_key(key, &normalized_key, NULL)) return NULL; - hashmap_entry_init(&k, strhash(normalized_key)); + hashmap_entry_init(&k.ent, strhash(normalized_key)); k.key = normalized_key; - found_entry = hashmap_get(&cs->config_hash, &k, NULL); + found_entry = hashmap_get_entry(&cs->config_hash, &k, ent, NULL); free(normalized_key); return found_entry; } @@ -1882,10 +1899,10 @@ static int configset_add_value(struct config_set *cs, const char *key, const cha */ if (!e) { e = xmalloc(sizeof(*e)); - hashmap_entry_init(e, strhash(key)); + hashmap_entry_init(&e->ent, strhash(key)); e->key = xstrdup(key); string_list_init(&e->value_list, 1); - hashmap_add(&cs->config_hash, e); + hashmap_add(&cs->config_hash, &e->ent); } si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value)); @@ -1913,12 +1930,14 @@ static int configset_add_value(struct config_set *cs, const char *key, const cha } static int config_set_element_cmp(const void *unused_cmp_data, - const void *entry, - const void *entry_or_key, + const struct hashmap_entry *eptr, + const struct hashmap_entry *entry_or_key, const void *unused_keydata) { - const struct config_set_element *e1 = entry; - const struct config_set_element *e2 = entry_or_key; + const struct config_set_element *e1, *e2; + + e1 = container_of(eptr, const struct config_set_element, ent); + e2 = container_of(entry_or_key, const struct config_set_element, ent); return strcmp(e1->key, e2->key); } @@ -1939,12 +1958,12 @@ void git_configset_clear(struct config_set *cs) if (!cs->hash_initialized) return; - hashmap_iter_init(&cs->config_hash, &iter); - while ((entry = hashmap_iter_next(&iter))) { + hashmap_for_each_entry(&cs->config_hash, &iter, entry, + ent /* member name */) { free(entry->key); string_list_clear(&entry->value_list, 1); } - hashmap_free(&cs->config_hash, 1); + hashmap_free_entries(&cs->config_hash, struct config_set_element, ent); cs->hash_initialized = 0; free(cs->list.items); cs->list.nr = 0; @@ -1987,18 +2006,27 @@ const struct string_list *git_configset_get_value_multi(struct config_set *cs, c return e ? &e->value_list : NULL; } -int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest) +int git_configset_get_string(struct config_set *cs, const char *key, char **dest) { const char *value; if (!git_configset_get_value(cs, key, &value)) - return git_config_string(dest, key, value); + return git_config_string((const char **)dest, key, value); else return 1; } -int git_configset_get_string(struct config_set *cs, const char *key, char **dest) +int git_configset_get_string_tmp(struct config_set *cs, const char *key, + const char **dest) { - return git_configset_get_string_const(cs, key, (const char **)dest); + const char *value; + if (!git_configset_get_value(cs, key, &value)) { + if (!value) + return config_error_nonbool(key); + *dest = value; + return 0; + } else { + return 1; + } } int git_configset_get_int(struct config_set *cs, const char *key, int *dest) @@ -2128,22 +2156,26 @@ const struct string_list *repo_config_get_value_multi(struct repository *repo, return git_configset_get_value_multi(repo->config, key); } -int repo_config_get_string_const(struct repository *repo, - const char *key, const char **dest) +int repo_config_get_string(struct repository *repo, + const char *key, char **dest) { int ret; git_config_check_init(repo); - ret = git_configset_get_string_const(repo->config, key, dest); + ret = git_configset_get_string(repo->config, key, dest); if (ret < 0) git_die_config(key, NULL); return ret; } -int repo_config_get_string(struct repository *repo, - const char *key, char **dest) +int repo_config_get_string_tmp(struct repository *repo, + const char *key, const char **dest) { + int ret; git_config_check_init(repo); - return repo_config_get_string_const(repo, key, (const char **)dest); + ret = git_configset_get_string_tmp(repo->config, key, dest); + if (ret < 0) + git_die_config(key, NULL); + return ret; } int repo_config_get_int(struct repository *repo, @@ -2213,14 +2245,14 @@ const struct string_list *git_config_get_value_multi(const char *key) return repo_config_get_value_multi(the_repository, key); } -int git_config_get_string_const(const char *key, const char **dest) +int git_config_get_string(const char *key, char **dest) { - return repo_config_get_string_const(the_repository, key, dest); + return repo_config_get_string(the_repository, key, dest); } -int git_config_get_string(const char *key, char **dest) +int git_config_get_string_tmp(const char *key, const char **dest) { - return repo_config_get_string(the_repository, key, dest); + return repo_config_get_string_tmp(the_repository, key, dest); } int git_config_get_int(const char *key, int *dest) @@ -2255,7 +2287,7 @@ int git_config_get_pathname(const char *key, const char **dest) int git_config_get_expiry(const char *key, const char **output) { - int ret = git_config_get_string_const(key, output); + int ret = git_config_get_string(key, (char **)output); if (ret) return ret; if (strcmp(*output, "now")) { @@ -2268,11 +2300,11 @@ int git_config_get_expiry(const char *key, const char **output) int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now) { - char *expiry_string; + const char *expiry_string; intmax_t days; timestamp_t when; - if (git_config_get_string(key, &expiry_string)) + if (git_config_get_string_tmp(key, &expiry_string)) return 1; /* no such thing */ if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) { @@ -2288,30 +2320,6 @@ int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestam return -1; /* thing exists but cannot be parsed */ } -int git_config_get_untracked_cache(void) -{ - int val = -1; - const char *v; - - /* Hack for test programs like test-dump-untracked-cache */ - if (ignore_untracked_cache_config) - return -1; - - if (!git_config_get_maybe_bool("core.untrackedcache", &val)) - return val; - - if (!git_config_get_value("core.untrackedcache", &v)) { - if (!strcasecmp(v, "keep")) - return -1; - - error(_("unknown core.untrackedCache value '%s'; " - "using 'keep' default value"), v); - return -1; - } - - return -1; /* default value */ -} - int git_config_get_split_index(void) { int val; @@ -2404,7 +2412,7 @@ void git_die_config(const char *key, const char *err, ...) */ struct config_store_data { - int baselen; + size_t baselen; char *key; int do_not_match; regex_t *value_regex; @@ -2530,7 +2538,7 @@ static struct strbuf store_create_section(const char *key, const struct config_store_data *store) { const char *dot; - int i; + size_t i; struct strbuf sb = STRBUF_INIT; dot = memchr(key, '.', store->baselen); @@ -2543,7 +2551,9 @@ static struct strbuf store_create_section(const char *key, } strbuf_addstr(&sb, "\"]\n"); } else { - strbuf_addf(&sb, "[%.*s]\n", store->baselen, key); + strbuf_addch(&sb, '['); + strbuf_add(&sb, key, store->baselen); + strbuf_addstr(&sb, "]\n"); } return sb; @@ -2566,7 +2576,6 @@ static ssize_t write_pair(int fd, const char *key, const char *value, { int i; ssize_t ret; - int length = strlen(key + store->baselen + 1); const char *quote = ""; struct strbuf sb = STRBUF_INIT; @@ -2585,8 +2594,7 @@ static ssize_t write_pair(int fd, const char *key, const char *value, if (i && value[i - 1] == ' ') quote = "\""; - strbuf_addf(&sb, "\t%.*s = %s", - length, key + store->baselen + 1, quote); + strbuf_addf(&sb, "\t%s = %s", key + store->baselen + 1, quote); for (i = 0; value[i]; i++) switch (value[i]) { @@ -3120,7 +3128,7 @@ static int git_config_copy_or_rename_section_in_file(const char *config_filename } while (fgets(buf, sizeof(buf), config_file)) { - int i; + unsigned i; int length; int is_section = 0; char *output = buf; @@ -3259,7 +3267,7 @@ int config_error_nonbool(const char *var) int parse_config_key(const char *var, const char *section, - const char **subsection, int *subsection_len, + const char **subsection, size_t *subsection_len, const char **key) { const char *dot; @@ -3319,6 +3327,26 @@ const char *current_config_origin_type(void) } } +const char *config_scope_name(enum config_scope scope) +{ + switch (scope) { + case CONFIG_SCOPE_SYSTEM: + return "system"; + case CONFIG_SCOPE_GLOBAL: + return "global"; + case CONFIG_SCOPE_LOCAL: + return "local"; + case CONFIG_SCOPE_WORKTREE: + return "worktree"; + case CONFIG_SCOPE_COMMAND: + return "command"; + case CONFIG_SCOPE_SUBMODULE: + return "submodule"; + default: + return "unknown"; + } +} + const char *current_config_name(void) { const char *name; @@ -3339,6 +3367,14 @@ enum config_scope current_config_scope(void) return current_parsing_scope; } +int current_config_line(void) +{ + if (current_config_kvi) + return current_config_kvi->linenr; + else + return cf->linenr; +} + int lookup_config(const char **mapping, int nr_mapping, const char *var) { int i; |